Artificial dielectric tuning device for microwave ovens
CA 2095134 C · Owner: The Pillsbury Company · Inventors: Pesheck, Peter S.; Lentz, Ronald R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus is suitable for use in a microwave oven. An artificial dielectric (10) is located adjacent or within a food product cooking stack (40) in the microwave oven. A support media (24) supports the artificial dielectric (10) in the cooking stack (40) at a desired distance from the oven shelf (18). The artificial dielectric (10) has properties suitable so that the cooking stack (40) can be positioned in the microwave oven to achieve desired cooking performance.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 30, 1991 and granted March 4, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 30, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 30, 2013.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.